22 Grey Birch Fusion FAB Defense M4 Chassis Adjustable Stock | Threaded Carbon Barrel

22 Grey Birch FAB Defense M4 Chassis Adjustable Stock | Threaded

22 Grey Birch Fusion Reciever System 

The FRS is a threaded barrel system designed to address common flaws in semi-auto rimfire rifles. By threading the barrel and receiver into a single unit, it eliminates the issue of barrel droop—where tolerance differences between the barrel and receiver cause loss of elevation or windage accuracy. This ensures greater stability, resulting in more consistent and accurate shooting.

10 / 22 FAB Defense M4 Chassis Adjustable Stock: 

The R10/22 M4 Collapsible Stock Conversion Kit offers a high-quality tactical upgrade for the Ruger 10/22, blending classic bench-rest design with modern tactical versatility. This stock features 1913 MIL-STD Picatinny side and lower rails for secure mounting of any Picatinny-based accessories, and allows for quick and easy drop-in installation. It includes Quick-Detach sling swivel sockets on both sides and an ergonomic design that reduces wrist fatigue while ensuring a secure grip. Finger grooves and a backstrap shape enhance trigger operation, and its durable, lightweight fiberglass-reinforced polymer construction ensures lasting performance.

Ruger and Precision Pro 

Enhancing 10/22 build further with Precision Pro upgrades, including the Auto Bolt Release, Bolt Buffer Polymer, Charging Handle, and Ambi Mag Release. Adding Precision Pro RCVR Cross Pins and Match Bolt Complete, along with the Ruger 10/22 Part BX Trigger (2.75lb) and 10-Round Mag (Black Boxless) for the superior shooting experience.

Specifications for 22 Grey Birch FAB Defense M4 Chassis:

• Calibre: 22
• Barrel Length: 16.1" 
• Barrel Thread: 1/2x28
• Overall Length: 840 mm (minimum); 920mm (maximum)
• Weight: 2.1 kg (bare without magazine)
• Trigger: Single stage
• Magazine Capacity: 10
• Stock: Adjustable Length
• Safety: Cross Bolt
• Finish: Black
• Magazine Type: Detachable box

Purchase of this item requires a firearms licence, you will need to complete a Police Order Form and take it into your local police station to have it signed off. The form can be found from the link below.

Police Order Form

Gun City is NZ's largest firearms dealers. We have been selling, importing, exporting, manufacturing, customising and repairing firearms and accessories since 1978. We have the largest range of guns, ammo and accessories available now, online in New Zealand.

Please call our shop for more information on +64 3 379-8888 in Christchurch, New Zealand.

(22SAR-067)